task manager sees twice the amount RAM

Hi everyone,
I've got a Macbook pro core2 Duo @2.20 GHz with 2 Gb RAM and I noticed that when I run Task Manager in Windows, it say

'Commit charge: xxxM / 4025M'

So it seems that he believes that he's got 4GB RAM, instead of 2...

Has anyone already encountered the same problem?

thanks a lot in advance !

It may be including virtual memory, since any 32 bit windows cannot address much more than 3.2 gig of RAM (it can address 4 gig, but minus some reserved space for drivers and the video memory)

Are you running 64 bit windows?

If I remember correctly "Commit charge" in XP shows the highest amount of memory Windows has used including the swap file. What are you doing in Windows when it shows 4GB Commit charge?

Commit charge - Wikipedia, the free encyclopedia